Facade system

Abstract

Facade system, exhibiting a substructure (1) and at least two panels (2, 3), wherein the panels (2, 3) are arranged one above the other, wherein each of the two panels (2, 3) has an upper chamfer section (4) and a lower chamfer section (5), and wherein the facade system has at least one retaining element (6), wherein the retaining element (6) has an upwardly open receiving section (7) and wherein the receiving section (7) has a first flank (8) facing the substructure (1) and a second flank (9) facing away from the substructure (1), wherein the flanks (8, 9) are arranged substantially parallel to each other and wherein the distance between the flanks (8, 9) is at least twice the material thickness of a panel (2, 3), and wherein the upper chamfer section (4.2) of a first panel (2) and the lower chamfer section (5.3) of a second panel (3) are received by the receiving section (7) in a plane-parallel and one behind the other, wherein the upper chamfer section (4.2) of the first panel (2) abuts the second flank (9) and wherein the lower chamfered section (5.3) of the second panel (3) abuts the first flank (8), . characterized by that the first flank (8) has a step, wherein a first contact plane (10) and a second contact plane (11) are formed by means of the step, and wherein the distance of the first contact plane (10) to the second flank (9) is at least twice the material thickness of a panel (2, 3), and wherein the distance of the second contact plane (11) to the second flank (9) is at least once and less than twice the material thickness of a panel (2, 3), and wherein the upper chamfer section (4.2) of the first panel (2) is arranged between the second flank (9) and the second contact plane (11), and wherein the lower chamfer section (5.3) of the second panel (3) is arranged between the first contact plane (10) and the upper chamfer section (4.2) of the first panel (2).

Description

[0001] The invention relates to a facade system for providing a building facade with panels according to the preamble of claim 1.

[0002] Various systems for providing building facades are known from the state of the art.

[0003] Depending on the application, large-area panels are used in this context, which are placed on the building's exterior wall to be clad using a suitable substructure.

[0004] The use of large-area panels is chosen here for visual reasons on the one hand, and on the other hand, building facades can be erected relatively quickly and with correspondingly lower provision costs using large-area panels.

[0005] In a simple version, according to the state of the art, the panels of the respective facade system are screwed to the substructure, which, however, usually leads to visual disadvantages due to visible screw points and to disadvantages with regard to the expansion behavior of the panels, since they cannot expand or contract due to the tight screw connection, or only to a very limited extent, in the event of temperature changes.

[0006] In the worst case, such systems can lead to damage to the panels, especially due to stress cracks.

[0007] A particularly efficient solution for providing a facade system, especially considering the thermal expansion of the panels, is known from German patent application DE 20 2006 018 660 U1. This document describes a system for cladding building surfaces, consisting of a substructure with vertical intermediate profiles, two support profiles, and a visible element held by these. The visible element is horizontally suspended within the support profiles, allowing it to accommodate thermally induced expansion in the horizontal direction.

[0008] Another option for providing a facade system is to include vertical support profiles as part of the substructure, with the support profiles having notches at regular intervals into which the corresponding panels are hung by means of a groove.

[0009] Besides their relatively simple installation, such facade systems have the disadvantage that the position and orientation of the panels are determined by the spacing of the cutouts, thus allowing only limited variability in panel arrangement. Furthermore, this results in a virtually point-like force transmission from the panel to the supporting profile.

[0010] The aforementioned, well-known facade systems have in common that the panels are generally made of sheet metal and produced using a roll forming process. In particular, the groove used to attach the panels to the substructure is formed by this process. However, due to the roll forming method and the sometimes complex groove formation required, only limited sheet thicknesses can be used for the panels, which in turn limits the maximum panel size.

[0011] DE 29 816 814 U1, which discloses a generic facade system with the features of the preamble of claim 1, further discloses a facade system with a substructure and panels arranged one above the other, wherein a lower folded section of a panel arranged above and an upper folded section of a panel arranged below are arranged together in a common recess of the substructure. A disadvantage of this is the difficulty of assembly, insofar as the recess space in the common recess may already be partially obstructed by the upper folded section of the panel arranged below when the upper panel is being installed.

[0012] Furthermore, WO 2011 / 053 142 A1 and DE 20 2004 020 824 U1 also show similar facade systems with panels in which the bent sections of superimposed panels are accommodated in a common recess. WO 2011 / 053 142 A1 shows an additional back bend on the upper bent section of the lower panel, which corresponds to a shaped section of the common recess and provides protection against excavation, while DE 20 2004 020 824 U1 proposes protection against excavation by means of a bendable locking section of the substructure profile forming the recess.

[0013] Starting from the disadvantages of the prior art, the object of the present invention is to provide a facade system with panels which, on the one hand, enables particularly simple and quick provision as well as different panel formats and, on the other hand, takes into account the thermal expansion behavior of the panels.

[0014] The problem is solved by the features listed in claim 1. Preferred embodiments are set forth in the dependent claims.

[0015] A facade system according to the invention comprises a substructure and at least two panels arranged one above the other.

[0016] The substructure of the facade system conforms to the current state of the art and features, in particular, vertical and, where applicable, horizontal support profiles, as well as elements for thermal insulation, depending on the application.

[0017] In this case, the panels represent the external visible elements of the facade system and are made, for example, of aluminum, stainless steel or coated steel.

[0018] The present facade system is characterized, according to the invention, firstly, by the fact that the panels each have an upper and a lower chamfered section.

[0019] The panels can therefore be supplied as bent parts by means of folding, which offers advantages in terms of supply and supply costs, especially compared to the commonly used roll-formed panels.

[0020] Furthermore, the facade system according to the invention is characterized by the fact that it has at least one retaining element for receiving the panels, which is firmly connected to the substructure, specifically to the support profiles of the substructure. The retaining element is attached, for example, via two vertically arranged fastening points, so that the retaining element can absorb correspondingly large loads and transfer them into the substructure.

[0021] According to the invention, the retaining element has an upwardly open receiving section, wherein the receiving section in turn has a first flank facing the substructure and a second flank facing away from the substructure.

[0022] The first flank is therefore understood to be the area of ​​the receiving section located on the side that rests against the substructure. In contrast, the second flank describes the area of ​​the receiving section that lies opposite the substructure.

[0023] The flanks of the recording section are essentially arranged parallel to each other, although depending on the application, it is also possible that the flanks deviate from a parallel course, at least in some sections.

[0024] According to the invention, the distance between the flanks corresponds to at least twice the material thickness of a panel.

[0025] The design of the receiving section according to the invention enables the upper bent section of a first panel and the lower bent section of a second panel to be received in a plane-parallel and one behind the other. The panels are received in the receiving section such that the upper bent section of the first panel rests against the second flank and the lower bent section of the second panel rests against the first flank. For this purpose, the respective bent sections of the panels are designed according to the invention to correspond with the respective flank of the receiving section.

[0026] According to the invention, the panels are mounted on the holding element such that the first, lower panel, with its upper bent section, is first inserted into the receiving section and held in position by it. Subsequently, the second, upper panel, with its lower bent section, is inserted into the receiving section, whereby the lower bent section of the second panel slides between the upper bent section of the first panel and the first flank, preferably pressing the upper bent section of the first panel against the second flank of the receiving section.

[0027] To simplify assembly, the flanks of the receiving section can also have corresponding features, such as chamfers, which make it particularly easy to insert the bent sections into the receiving section.

[0028] Compared to conventional solutions, the facade system according to the invention offers the technological advantage that, firstly, the panels can be supplied by simple bending, thus making them particularly cost-effective and eliminating the need for roll forming. Secondly, this allows for greater panel thicknesses than are possible with conventional facade systems. This enables, in particular, the production of especially stable or comparatively large-area panels, while simultaneously keeping the panel production costs, and therefore the overall facade system costs, low. Furthermore, panels can also be easily manufactured outside of standard grid dimensions, as is necessary, for example, due to existing openings such as windows.

[0029] Furthermore, the present facade system enables particularly simple and time-saving installation, as the panels are hung in the retaining elements and do not need to be fixed by screws. The invention offers a particular advantage in providing vertical pull-out protection, which is otherwise achieved by screws, because the uppermost panel simultaneously provides vertical pull-out protection for the panel below it.

[0030] A further advantage of the facade system according to the invention is that the retaining element can be attached to the substructure during prefabrication. This avoids the additional time required for on-site assembly of the retaining element.

[0031] Furthermore, the present facade system offers the significant technological advantage that the panels are suspended within the mounting element. Compared to conventional solutions with screwed panels, this design allows for thermal expansion of the panels with minimal technical effort, thus preventing corresponding damage, particularly from stress cracks.

[0032] According to the invention, the load transfer of the panels into the respective holding element can take place either via the lower and the upper bent section of the respective panel or only via one of the bent sections of the respective panel.

[0033] In the case that the load transfer only occurs via one of the bent sections and the other bent section can move freely vertically in the receiving section of the respective holding element, a particular advantage is achieved that the corresponding panel, especially under the influence of temperature, can perform unhindered vertical expansion in addition to horizontal expansion.

[0034] Compared to known facade elements, in which the supporting profiles of the substructure have fixed cutouts and in which the panels must necessarily be arranged in the respective cutouts, the facade system according to the invention also has the advantage that the holding element can be attached to the substructure in any position and thus variable panel sizes and geometries can be implemented within the facade system.

[0035] Furthermore, by matching the opening dimensions of the receiving section of the retaining element, panels with different material thicknesses can be used as a further advantage.

[0036] Furthermore, a technological advantage of the facade system lies in the fact that the vertical distances between the first and second panels can be adjusted particularly easily, for example by appropriately shaping the beveled sections. In this context, the upper beveled section of the first panel can be designed, for instance, so that it rests either on the top surface of the second flank or, alternatively, on the bottom of the receiving section.

[0037] Furthermore, the lower chamfered section of the second panel can be designed in such a way that the desired vertical offset between the first and the second panel is achieved.

[0038] A further advantage is that the facade system according to the invention can be applied equally to panels arranged at an angle and to panels where the respective folded sections are not necessarily aligned parallel to each other. In this way, the facade system according to the invention also enables the use of specially shaped panels.

[0039] A preferred further development of the facade system provides that the first flank of the intake section has a step.

[0040] This gradation creates a first and a second investment level within the flank.

[0041] According to the invention, the contact planes are designed offset from each other in such a way that the distance of the first contact plane to the second flank is at least twice the material thickness of a panel and the distance of the second contact plane to the second flank is at least once and less than twice the material thickness of a panel.

[0042] According to the invention, the arrangement of the panels within a corresponding receiving section with a stepped first flank is such that the upper bent section of the first panel is arranged between the second flank and the second contact plane and the lower bent section of the second panel is arranged between the first contact plane and the upper bent section of the first panel.

[0043] The particular advantage of the further development described here lies in the fact that the lower panel, with its upper beveled section, is guided in the receiving section during its installation in such a way that the necessary clearance for receiving the lower beveled section of the second, upper panel is immediately created in the receiving section. At the same time, the upper beveled section of the first panel is already essentially fixed in the holding element with no play between the second flank and the second contact surface, without the lower beveled section of the second panel needing to be inserted.

[0044] In this way, the assembly of the second panel within a facade system according to the invention is further simplified.

[0045] Furthermore, the stepped design of the first flank allows for height determination, especially of the second, uppermost panel in the retaining element, thus facilitating compliance with a predetermined distance between the panels.

[0046] In an advantageous embodiment of the facade system, one of the bent sections of the panels has at least one deformation section. This deformation section is designed such that it overlaps at least one end face of the retaining element.

[0047] The deformation section according to the invention provides a particularly simple and effective means of securing the corresponding panel against horizontal slippage by bringing the overlapping area of ​​the deformation section into a positive fit with the respective end face of the retaining element.

[0048] The deformation section can be provided, for example, by slotting the respective bending section, whereby the relevant area of ​​the slotted bending section is bent again, thus providing the engagement of the respective end face of the retaining element by the bending section.

[0049] The deformation section can also be designed in such a way that it overlaps both opposite end faces of the retaining element, thus providing a positive locking connection on both sides between the end faces of the retaining element and the respective bending section, and thus securing the respective panel against horizontal slippage on both sides.

[0050] An alternative design of the facade system provides for securing the panel against horizontal slippage by a locking bolt. Depending on the application, this bolt is positioned laterally within the panel, adjacent to the retaining element, and creates a positive connection between the panel and the retaining element in the horizontal direction. The locking bolt can also be designed as a locking screw.

[0051] Advantageously, the securing against horizontal slippage of the respective panel by means of a deformation section or locking bolt is provided only on one retaining element per panel, so that the horizontal thermal length variation is not hindered.

[0052] In another advantageous variant of the facade system, the second flank of the retaining element has a cantilevered section.

[0053] The cantilever section is designed in such a way that it extends over one end face of the retaining element.

[0054] Furthermore, the cantilever section is only formed in the upper area of ​​the second flank and does not extend to its base.

[0055] This design makes it possible for the cantilever section to be engaged on its lower side by the deformation section of the respective bending section, thus providing a positive connection between the deformation section and the cantilever section.

[0056] The interlocking mechanism provides a particular advantage: it prevents the respective panel from being pulled vertically out of the holding element.

[0057] When a cantilever section is provided according to the present variant, the deformation section of the lower, first panel is preferably designed such that the total thickness of the panel including the deformation section does not exceed the maximum distance between the first and second flank of the receiving section.

[0058] In the case of a step-down according to claim 1, the maximum distance is between the first mounting plane of the first flank and the second flank.

[0059] The present design allows the first panel, with its deformation section, to be inserted into the receiving section without complications, with the deformation section passing over the cantilever section. Upon reaching its final position, the first panel is then shifted towards the second flank until the deformation section engages behind the cantilever section. This engagement is further facilitated by the subsequent placement of the second panel in the receiving section, as this panel pushes the first panel further towards the second flank and thus into its final position.

[0060] Even in the advantageous further development with cantilever section, a locking bolt can be used as an alternative to the deformation section, which provides the backing.

[0061] Another advantageous design of the facade system provides that the retaining element has a locking screw which is arranged in a corresponding receptacle, in particular a threaded bore, in the retaining element and is screwed into the retaining element from the substructure side.

[0062] The locking screw penetrates the retaining element in the area of ​​the first flank and acts on the upper beveled section of the first panel.

[0063] The action of the locking screw clamps the first panel against the retaining element, effectively preventing vertical pulling out or horizontal slippage of the first panel out of or within the retaining element.

[0064] Furthermore, the receptacle for the locking screw can also be designed so that it penetrates the second flank of the retaining element. This creates a particular advantage: an area within the retaining element into which the upper beveled section of the first panel can be formed while the locking screw is tightening, thus creating an additional positive fit between the first panel and the retaining element in this area.

[0065] The facade system according to the invention is described as an exemplary embodiment by reference to Fig. 1 Side view of facade system as a schematic representation Fig. 2. Detailed view of the retaining element Fig. 3 Side view retaining element Fig. 4a Front view of retaining element with one-sided cantilever section Fig. 4b Front view of retaining element with cantilevered section on both sides Fig. 5 Side view of the retaining element with the first panel Fig. 6 Side view of a non-inventive facade system with a recessed cantilever section Fig. 7 Detailed view of the retaining element with locking screw explained.

[0066] Fig. Figure 1 shows the facade system in a side view. The facade system comprises a substructure 1, essentially formed by vertical support profiles, as well as a first panel 2 and a second panel 3.

[0067] The panels 2, 3 form the visible elements of the facade system and, according to the invention, each have an upper beveled section 4 and a lower beveled section 5. The beveled sections 4, 5 can be either simple or, as in Fig. 1 shown, as two or more bends.

[0068] According to the invention, at least one retaining element 6 is provided for receiving the panels 2, 3, which in this case is firmly connected to the substructure 1 via two fastening points 15. The retaining element 6 is inserted into the Fig. Shown 2 to 4.

[0069] The retaining element 6 has, as in Fig. Figure 3 shows a receiving section 7, which in turn has a first flank 8 and a second flank 9. The first flank 8 forms the substructure-side area of ​​the receiving section 7, whereas the second flank 9 forms the panel-side area of ​​the receiving section 7.

[0070] According to the advantageous embodiment of the facade system according to claim 2, the first flank 8 has a step which, as in Fig. As shown in Figure 3, a first mounting level 10 and a second mounting level 11 are formed. The step of the first flank 8 is designed such that the distance between the first mounting level 10 and the second flank 9 is at least twice the material thickness of a panel 2, 3, and that the distance between the second mounting level 11 and the second flank 9 is at least one and less than two times the material thickness of a panel 2, 3.

[0071] Panels 2 and 3 are, as Fig. Figure 1 shows that, arranged in the receiving section 7 of the retaining element 6, the upper bevel section 4.2 of the first panel 2 is located between the second flank 9 and the second contact plane 11 of the first flank 8, and the lower bevel section 5.3 of the second panel 3 is located between the first contact plane 10 of the first flank 8 and the upper bevel section 4.2 of the first panel 2.

[0072] During the assembly of the facade system according to the invention, the panels 2, 3 are hung in the retaining element 6, wherein first the upper bent section 4.2 of the first panel 2 is inserted into the receiving section 7.

[0073] Due to the advantageous stepping of the first flank 8, the upper bending section 4.2 is guided directly into the correct position between the second mounting plane 11 and the second flank 9, thus simultaneously keeping free the necessary clearance for receiving the lower bending section 5.3 of the second panel 3.

[0074] To facilitate the insertion of the first panel 2, the step of the first flank 8 at the transition between the first mounting level 10 and the second mounting level 11 has a chamfer, through which the upper bevel section 4.2 can be guided into the correct starting position.

[0075] After the first panel 2 has been inserted, the second panel 3 is inserted, whereby the lower beveled section 5.3 of the second panel 3 is received in the receiving section 7 between the first mounting plane 10 and the upper beveled section 4.2 of the first panel 2.

[0076] To prevent horizontal slippage of the first panel 2 relative to the retaining element 6, the upper chamfered section 4.2, as shown in Fig. 5 shows a deformation section 12.

[0077] The deformation section 12 is provided in this case by a deformation in the area of ​​the bend in the form of a dent and is preferably designed such that it overlaps both end faces of the retaining element 6.

[0078] An undesired horizontal movement of the first panel 2 is prevented by the deformation section 12 in such a way that a positive locking on both sides between the first panel 2 and the retaining element 6 is provided in the horizontal direction.

[0079] In this way, a particular advantage is that additional safeguards against horizontal slippage of the first panel 2, for example by screwing, can be dispensed with.

[0080] The embodiment of the first panel 2 described here can be applied analogously to the second panel 3 as well as to further panels within the facade system according to the invention, each in conjunction with a further retaining element 6.

[0081] Furthermore, the deformation section 12 can optionally be provided either during the manufacture of the respective panel 2, 3 or only after it has been arranged in the holding element 6.

[0082] In another embodiment of the facade system, the second flank 9 of the retaining element 6, as shown in the Fig. 4a and Fig. 4b shows a cantilever section 14.

[0083] The cantilever section 14 is according to Fig. 4a is designed such that it overlaps one end face of the retaining element 6 and that it can simultaneously be engaged from behind on its underside by the deformation section 12 of the first panel 2.

[0084] Alternatively, the cantilever section can be, as in Fig. 4b shown, be designed in such a way that it extends beyond both end faces of the retaining element 6.

[0085] In this embodiment, the deformation section 12 is produced only after assembly, when the upper bent section 4.2 has assumed its final position in the receiving section 7, by bending, for example, the portion of the bent section 4.2 projecting laterally next to the retaining element 6 using pliers. The engagement of the cantilever section 14 by the deformation section 12 creates a positive connection in the vertical direction between the retaining element 6 and the first panel 2, thus preventing the first panel 2 from being pulled out vertically from the retaining element 6.

[0086] The further development described here can also be applied analogously to the second panel 3 as well as to further panels within the facade system according to the invention, each in conjunction with a further holding element 6.

[0087] Fig. Figure 5 shows a particular embodiment in which the deformation section 12 was manufactured prior to assembly. To enable the panel 2 to be positioned in the receiving section 7 when a cantilever section 14 and a deformation section 12 of the first panel 2 are present simultaneously, the deformation section 12 is designed such that the total thickness of the panel 2 in the area of ​​the deformation section 12 does not exceed the maximum opening width of the receiving section 7.

[0088] In this case, the arrangement of the panel 2 in the receiving section 7 is preferably such that the panel 2 is inserted into the receiving section 7 from above until the deformation section 12 has passed the cantilever section 14.

[0089] The panel 2 is then moved towards the second flank 9 until the deformation section 12 overlaps the cantilever section 14, and subsequently lowered further vertically and brought into its final position. In the embodiment according to Fig. 5. Assembly with prefabricated deformation section 12 can be ensured despite the stepping of the first flank 8, whereby a vertical play between the deformation section 12 and the cantilever section 14 must then be accepted.

[0090] Fig. Figure 6 shows a non-inventive embodiment of a facade system with a prefabricated deformation section 12, in which the deformation section 12 of the first panel 2 differs from the embodiment shown in Figure 6. Fig. 5 in its final position, however, rests directly against the cantilevered section 14 of the retaining element 6. In this embodiment, vertical play between the first panel 2 and the retaining element 6 is avoided. In the embodiment according to Fig. 6. For this purpose, the gradation of the first flank 8 is omitted.

[0091] A retaining element 6 of another embodiment of the facade system is in Fig. 7 shown.

[0092] In this case, the retaining element 6 has a locking screw 16, which is arranged in a corresponding receptacle of the retaining element such that the locking screw 16 is accessible from the side of the substructure 1 after the retaining element 6 has been mounted on the substructure 1 and can be tightened using a suitable tool (not shown).

[0093] The arrangement of the locking screw 16 in the retaining element 6 is such that the locking screw 16 penetrates the first flank 8 and acts on the upper beveled section 4 of the lower, first panel 2, thereby clamping the latter in the retaining element 6 between the locking screw and the opposite second flank 9 of the retaining element 6.

[0094] In this way, the first panel 2 is secured against both vertical removal from the retaining element 6 and horizontal displacement within the retaining element 6 by means of the locking screw 16.

[0095] The locking screw 16 can, for example, have a thread-side tip which, when the locking screw 16 is tightened, causes a local deformation of the upper bent section 4 of the first panel 2 and thus provides optimized pull-out protection for the first panel 2.

[0096] Furthermore, as in Fig. Figure 7 shows that the receptacle for the locking screw 16 in the retaining element 6 is designed as a bore which passes through both the first flank 8 and the second flank 9 and which has a thread in the area of ​​the first flank 8 into which the locking screw 16 is screwed.

[0097] By means of the penetration 17 of the second flank 9, a further advantage is gained: an area is created in the second flank 9 into which the upper bent section 4 of the first panel 2 can be formed section by section under the influence of the locking screw 16 and the resulting deformation. In this way, an additional positive locking area is created between the panel 2 and the retaining element 6, which further optimizes the securing against horizontal or vertical displacement of the panel 2 in the retaining element 6. Reference symbols used 1 Substructure 2 first panel 3 second panel 4 upper chamfer section 4.2 Upper chamfer section of the first panel 5 lower chamfer section 5.3 Lower chamfer section of the second panel 6 retaining element 7 Recording section 8 first flank 9 second flank 10 first investment level 11 second investment level 12 Deformation section 13 Front side of the retaining element 14 Cantilever section 15 attachment points 16 locking screw 17. Penetration of the second flank

Claims

[1] Facade system, exhibiting a substructure (1) and at least two panels (2, 3), wherein the panels (2, 3) are arranged one above the other, wherein each of the two panels (2, 3) has an upper chamfer section (4) and a lower chamfer section (5), and wherein the facade system has at least one retaining element (6), wherein the retaining element (6) has an upwardly open receiving section (7) and wherein the receiving section (7) has a first flank (8) facing the substructure (1) and a second flank (9) facing away from the substructure (1), wherein the flanks (8, 9) are arranged substantially parallel to each other and wherein the distance between the flanks (8, 9) is at least twice the material thickness of a panel (2, 3), and wherein the upper chamfer section (4.2) of a first panel (2) and the lower chamfer section (5.3) of a second panel (3) are received by the receiving section (7) in a plane-parallel and one behind the other, wherein the upper chamfer section (4.2) of the first panel (2) abuts the second flank (9) and wherein the lower chamfered section (5.3) of the second panel (3) abuts the first flank (8),. characterized by , that the first flank (8) has a step, wherein a first contact plane (10) and a second contact plane (11) are formed by means of the step, and wherein the distance of the first contact plane (10) to the second flank (9) is at least twice the material thickness of a panel (2, 3), and wherein the distance of the second contact plane (11) to the second flank (9) is at least once and less than twice the material thickness of a panel (2, 3), and wherein the upper chamfer section (4.2) of the first panel (2) is arranged between the second flank (9) and the second contact plane (11), and wherein the lower chamfer section (5.3) of the second panel (3) is arranged between the first contact plane (10) and the upper chamfer section (4.2) of the first panel (2). [2] Facade system according to claim 1, characterized by, that one of the bending sections (4, 5) of the panels (2, 3) has at least one deformation section (12), wherein the at least one deformation section (12) overlaps an end face (13) of the retaining element (6). [3] Facade system according to claim 2, characterized by , that the second flank (9) of the retaining element (6) has a cantilever section (14), wherein the cantilever section (14) extends over an end face (13) of the retaining element (6) and wherein the deformation section (12) engages behind the cantilever section (14) on a lower side. [4] Facade system according to one of the preceding claims, characterized by, that the retaining element (6) has a locking screw (16), wherein the locking screw (16) can be screwed into the retaining element (6) on the side of the retaining element (6) facing the substructure (1), and wherein the locking screw (16) penetrates the retaining element (6) in the area of ​​the first flank (8) and acts on the upper chamfered section (4.2) of the first panel (2), and wherein the locking screw (16) provides a position fixation of the first panel (2) in the retaining element (6).

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